211210312 has 16 divisors (see below), whose sum is σ = 419314860. Its totient is φ = 99393024.

The previous prime is 211210267. The next prime is 211210313. The reversal of 211210312 is 213012112.

It can be written as a sum of positive squares in 2 ways, for example, as 208918116 + 2292196 = 14454^2 + 1514^2 .

It is a junction number, because it is equal to n+sod(n) for n = 211210292 and 211210301.

It is not an unprimeable number, because it can be changed into a prime (211210313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 776373 + ... + 776644.

Almost surely, 2^211210312 is an apocalyptic number.

It is an amenable number.

211210312 is a deficient number, since it is larger than the sum of its proper divisors (208104548).

211210312 is a wasteful number, since it uses less digits than its factorization.

211210312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1553040 (or 1553036 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 211210312 is about 14533.0764809107. The cubic root of 211210312 is about 595.5319132983.

Adding to 211210312 its reverse (213012112), we get a palindrome (424222424).

The spelling of 211210312 in words is "two hundred eleven million, two hundred ten thousand, three hundred twelve".